I think you need to make it more clear to your site visitor what the site is about. It's kind of all over the place.
Need more information, some visitor will be confuse about this, a little slow, and change your layout...nice gif's though, i like it Peace
I dont know what you are trying to prove here. There are 750 million Facebook users and GPlus is still in trial stage.
I have no idea what's going on. I tried to click the images and nothing happened. I don't know what the purpose of the site is. It also took a bit to load, the gifs might be heavy. Some of these tools are free, maybe give them a shot, I think you'll learn something from the point of view of people who aren't inside your head: mashable.com 2010 07 22 web-design-feedback-tools (put / where I have spaces)
I think this is a very confusing site. What is it's purpose? I have read the other posts and tend to agree. I had no idea what to do on the site. Click on a face? Facebook? Google+? What for? Why do I even care? A few words, even just a better title with some short text would help a lot. Good luck.